Senior Python Developer AWS - Front Office

Client Server; Greater London; Hybrid; GBP 110,000 - 130,000; Full time

Benefits offered by this job

Pension

Job summary

Client Server is seeking a Senior Python Developer / Engineer with strong Python, AWS and cloud architecture expertise to design and implement high performance trading systems for Front Office environments in London. You will own significant parts of the delivery lifecycle and work with stakeholders to translate complex requirements into scalable solutions.

Based in London with three days in the Bank office and two days from home, you will lead projects from design through to deployment,

Qualifications

• Advanced backend Python development experience.
• Strong knowledge of AWS, DevOps practices, CI/CD and containerisation.
• Willingness to perform occasional front end work.
• Experience owning end-to-end software delivery lifecycle.
• Experience in Front Office trading environments.
• Excellent communication skills.

Responsibilities

• Design, develop and enhance high-performance trading systems.
• Build secure, highly available cloud infrastructure.
• Lead projects from design through deployment.
• Collaborate with stakeholders across the business.
• Champion engineering best practices and automation.

Skills

Python backend

AWS

DevOps

CI/CD

Containerisation

Front-end work

End-to-end lifecycle

Front Office trading

Communication skills

Job description

Senior Python Developer / Engineer (Python AWS) London / WFH to £130k

Are you a Python technologist with experience of Front Office trading environments?

You could be progressing your career on the Asset Management side of a global Japanese bank as they expand this product offering within the UK.

As a Senior Python Developer, you'll design, develop and enhance high performance trading systems and cloud infrastructure that support critical front, middle and back office operations. Collaborating with stakeholders across the business, you'll translate complex requirements into scalable, resilient technology that drives efficiency and business growth.

You'll lead projects from design through to deployment, building secure, highly available systems capable of handling large volumes of market and trading data. Alongside hands‑on development, you'll champion engineering best practices, automation, DevOps and cloud architecture, helping to continuously improve the team's technical capabilities.

Location / WFH:

You'll be based in the London, Bank office three days a week with flexibility to work from home twice a week.

About you:

• You have advanced backend Python development skills
• You have a strong knowledge of AWS, DevOps practices, CI/CD, Containerisation
• You're comfortable with occasional front end work
• You have experience of owning the end‑to‑end software delivery lifecycle, are proactive in bringing solutions problems identified
• You have experience of working in Front Office trading environments
• You're pragmatic with great communication skills

What's in it for you:

As a Senior Python Developer / Engineer you will earn a competitive package including:

• Salary to £130k + bonus
• Pension